HomeMy WebLinkAboutAPPROVED 120 BLUE GROTTO DR FT PIERCE FL TDH CALCS (EFILE)(FINAL)Project No. : 2126426
Project Name : Garfinkle Residence
Project Address : 120 Blue Grotto Dr Fort Pierce, FL
SIMPLIFIED TOTAL DYNAMIC HEAD (TDH) CALCULATIONS WORKSHEET
DETERMINE MAXIMUM SYSTEM FLOW RATE :
1. Calculate Pool Volume :Surface area ≔A =⋅7 ft 21 ft 147 ft 2
Average depth ≔d 4.83 ft
≔V =⋅A d 5311.243 gal
2. Determine preferred turnover time in hours :≔t =8 hr 480 min
3. Determine Max. Flow Rate :≔Q1 =―V
t 11.065 gpm
4. Spa jets :N/A ≔Q2 0 gpm
(For single pump pool / spa combo, use the higher of No. 3 or No. 4 in the following
calculations for the pool and spa.
Calculated flow rate ≔Q =+Round ⎛⎝,max ⎛⎝,Q1 Q2⎞⎠1 gpm ⎞⎠1 gpm 12 gpm
Allowable flow rate ≔Qmin 36 gpm
Actual flow rate ≔Q =max ⎛⎝,Q Qmin⎞⎠36 gpm
Actual turnover time ≔t =―V
Q 2.459 hr
FloridaFlorida EngiEngineerinneeringg LLLLCC
41641611 TamiamiTamiami Trail,Trail, SuitSuitee 101101 PoPortrt Charlotte,Charlotte, FLFL 3339539522‐‐92920404 www.flengwww.flengineeineerringllc.cingllc.comom PhoPhone:ne: (9(94141)) 393911‐‐59598080
LicLiceennssee NumNumbberer #30782,#30782, #60102#60102
CRAIG E. GUNDERSON, P.E.#60102
Date: 09/23/2021
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RECOMMENDED MINIMUM PIPE SIZE (2020 FBC, 7TH EDITION) :
Branch Piping to be : 2"to keep velocity @ 6fps max at =Q 36 gpm
Trunk Piping to be : 2"to keep velocity @ 8fps max at =Q 36 gpm
Return Piping to be : 2"to keep velocity @ 10fps max at =Q 36 gpm
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SIMPLIFIED TDH :
1. Friction loss (in suction pipe) in 2"pipe per ft at =Q 36 gpm ≔fsuction 0.1
2. Friction loss (in return pipe) in 2"pipe per ft at =Q 36 gpm ≔freturn 0.16
3. Length of suction pipe ≔Lsuction 50 ft
TDH in suction pipe ≔TDHsuction =⋅Lsuction fsuction 5 ft
4. Length of return pipe ≔Lreturn 80 ft
TDH in return pipe ≔TDHreturn =⋅Lreturn freturn 12.8 ft
5. TDH in Piping ≔TDHpiping =+TDHsuction TDHreturn 17.8 ft
6. Filter loss in TDH ≔TDHfilter 16.6 ft
7. Heater loss in TDH ≔TDHheater 10.0 ft
8. All other losses ≔TDHother 16.0 ft ...head losses in fittings, etc
9. Total simplidied TDH ≔TDH =+++TDHpiping TDHfilter TDHheater TDHother 60.4 ft
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Pump Selection using pump curve for simplified TDH and System Flow Rate :
Manufacturer : Pentair Model : Superflo VS Size / HP = 1.5
Main Drain Cover :
Manufacturer : Paramount Model : SDX2
Max. cover flow rate = 188 gpm Cover Replacement Date = 7 years
MAIN DRAIN PLUMBING METHOD OPTIONS :
Pool A. Dual outlets in parallel one pump
B. Dual outlets in parallel to dual pumps in parallel
C. Parallel dual outlets to two pumps
D. Dual outlets on different planes
E. Three or more outlets in parallel symmetric piping
F. Three or more outlets in parallel electrically tapped piping
G. Three or more outlets in parallel looped piping
H. Single unblockable channel outlets to single pump
(channel drain @ 316 gpm max. flow rate)
I. Single unblockable channel outlets to two pumps
(channel drain @ 217 w/2 ports & 278 gpm w/3 ports
(see note 4)
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Notes :
1. In flow suction outlets cover/grate must conform to most recent edition of ASME/ANSI
A112.19.8 and be embossed with that edition approval.
2. Pump and Filter make, model and location cannot change without submitting a revised
plan TDH worksheet.
3. See manufacturer's specifications for pump curve of specified pump.
4. Contractor to choose main drain plumbing method from the options (A to I) listed
above.
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